/*
 * The MIT License (MIT)
 * Copyright (C) 2024 Huawei Device Co., Ltd.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 */

use crate::{
  bindgen_runtime::{ToNapiValue, TypeName},
  Env, Error, Result,
};

pub trait Task: Send + Sized {
  type Output: Send + Sized + 'static;
  type JsValue: ToNapiValue + TypeName;

  /// Compute logic in libuv thread
  fn compute(&mut self) -> Result<Self::Output>;

  /// Into this method if `compute` return `Ok`
  fn resolve(&mut self, env: Env, output: Self::Output) -> Result<Self::JsValue>;

  /// Into this method if `compute` return `Err`
  fn reject(&mut self, _env: Env, err: Error) -> Result<Self::JsValue> {
    Err(err)
  }

  // after resolve or reject
  fn finally(&mut self, _env: Env) -> Result<()> {
    Ok(())
  }
}
